OK thanks guys. I ask because I can't decide if I want to install it remotely (
cheetah) or just hard wire it in. Cheetah was hinting that it might take some time to come out with a model compatible with the new Mx7. I'm thinking I'll probably hard wire it in because I'll be installing the cars new alarm system soon, so I'll be running wires through the firewall anyway. The only concern that I have is that if the heads go bad I'll have to mess around with the firewall wiring
all over again because the heads don't disconnect from the wiring do they?

Maybe I'll just design a interface that will be
permanently installed, and then just plug the heads in under the hood